EP2017492B1 - Appareil de frein à disque - Google Patents

Appareil de frein à disque Download PDF

Info

Publication number
EP2017492B1
EP2017492B1 EP08012968.7A EP08012968A EP2017492B1 EP 2017492 B1 EP2017492 B1 EP 2017492B1 EP 08012968 A EP08012968 A EP 08012968A EP 2017492 B1 EP2017492 B1 EP 2017492B1
Authority
EP
European Patent Office
Prior art keywords
cylinder hole
cam plate
adjuster
side cam
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP08012968.7A
Other languages
German (de)
English (en)
Other versions
EP2017492A1 (fr
Inventor
Akifumi c/o Nissin Kogyo Co. Ltd. Watada
Takenori c/o Nissing Kogyo Co. Ltd. Tsuchiya
Kazuo c/o Nissin Kogyo Co. Ltd. Koyama
Yoshihisa c/o Honda Motor Co. Ltd. Uchida
Akihiko c/o Honda Motor Co. Ltd. Koike
Akihito c/o Honda Motor Co. Ltd. Kon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Nissin Kogyo Co Ltd
Original Assignee
Honda Motor Co Ltd
Nissin Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2007189308A external-priority patent/JP4782738B2/ja
Priority claimed from JP2007189307A external-priority patent/JP4767227B2/ja
Application filed by Honda Motor Co Ltd, Nissin Kogyo Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP2017492A1 publication Critical patent/EP2017492A1/fr
Application granted granted Critical
Publication of EP2017492B1 publication Critical patent/EP2017492B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
    • F16D65/567—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/14—Mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2123/00—Multiple operation forces

Definitions

  • the present invention relates to a disk brake apparatus, particularly to a disk brake apparatus comprising a piston for hydraulically pressing friction pads, an adjuster for automatically adjusting the gap between the pads and a disk rotor, and a parking brake for pushing the piston through the adjuster by a ball ramp type thrust conversion mechanism.
  • a disk brake apparatus with a parking brake comprising a hydraulic actuating mechanism operated by a brake pedal, and a mechanical actuating mechanism configured to be pulled by a hand lever or a foot pedal is known as one of disk brake apparatuses for use in a four-wheel vehicle or the like.
  • a piston that constitutes a part of the hydraulic actuating mechanism is placed on the distal end opening side of a cylinder hole provided in the caliper body, and an adjuster having an adjuster nut and an adjuster bolt is placed on the back side of the piston in such a disk brake apparatus with a parking brake.
  • a thrust conversion mechanism that constitutes a part of the mechanical actuating mechanism is placed on the bottom side of the cylinder hole.
  • a ball ramp type thrust conversion mechanism has been widely used as the thrust conversion mechanism.
  • a fixed side cam plate and a drive side cam plate both of which have their respective ramp grooves formed therein for accommodating cam bearings, are placed opposite to each other.
  • a thrust for moving the piston to the disk rotor side is generated by the cam action of the ramp grooves and the cam bearings.
  • the thrust pushes the piston to the disk rotor side through the adjuster and presses the friction pads to the disk rotor so that the braking force is generated.
  • the thrust conversion mechanism, the adjuster having a thrust transmitting plate, and a cam spring for pushing the thrust transmitting plate toward the thrust conversion mechanism are accommodated in a generally cylinder-shaped housing, and engaging protrusions formed on the outer circumference of the thrust transmitting plate engage in the engaging apertures formed on the circumferential wall of the housing in an attempt to prevent the rotation of the thrust transmitting plate (see Japanese Patent No. 2739879 and Japanese Unexamined Patent Publication No. 2000-136838 ). Furthermore, in some cases, portions of the circumferential wall of the housing are partially cut and bent outwardly to form plural locking parts, and a C-shaped ring is attached to the cylinder hole opening sides of the locking parts. Then, the housing is mounted to the housing mounting portion of the cylinder hole through the C-shaped ring (see Japanese Patent No. 2739879 ).
  • Document EP 1757836 A1 discloses a disk brake apparatus according to the preamble of claim 1.
  • the engaging apertures are formed on the circumferential wall of the cylindrical housing in the above-described disk brake apparatus, it has been difficult to secure enough overlap widths for fitting the engaging apertures and the engaging protrusions. Furthermore, if the plate thickness of the housing is increased in order to secure sufficient overlap widths for fitting the engaging apertures and the engaging protrusions, designing and manufacturing the adjust mechanism, the cylinder hole, and the like become difficult. Moreover, in the case where the locking parts are formed in the housing by cutting and bending the circumferential wall of the housing in the above-described disk brake apparatus, it is difficult to achieve a sufficient strength. If the plate thickness of the housing is increased to enhance the strength of the locking parts, it not only increases the weight of the apparatus, but also makes designing and manufacturing the adjust mechanism, the cylinder hole, and the like more difficult.
  • a first object of the present invention is to provide a disk brake apparatus capable of achieving the reliable prevention of the rotation of the thrust transmitting plate with a simple structure.
  • a second object of the present invention is to provide a disk brake apparatus capable of increasing the strength of the locking parts formed on the housing and firmly mounting the housing to the cylinder hole with a simple structure.
  • a disk brake apparatus in accordance with one aspect of the present invention includes a piston accommodated in the distal end opening side of a cylinder hole, a thrust conversion mechanism arranged on the bottom side of the cylinder hole, and an adjuster having an adjuster nut and an adjuster bolt, the adjuster being provided between the thrust conversion mechanism and the piston. The piston is pushed by the thrust conversion mechanism through the adjuster.
  • the thrust conversion mechanism comprises a fixed side cam plate attached on the bottom wall of the cylinder hole, a camshaft passing through the cylinder hole bottom wall and the fixed side cam plate, the camshaft being rotatable with respect to the cylinder hole bottom wall and the fixed side cam plate and movable in the cylinder axis direction, a drive side cam plate provided at the cylinder hole opening side end portion of the camshaft, and ramp grooves formed in the drive side cam plate and the fixed side cam plate, each of the ramp grooves in the drive side cam plate and a corresponding one of the ramp grooves in the fixed side cam plate being arranged in positions facing each other, and cam bearings accommodated in those ramp grooves.
  • the adjuster comprises a thrust transmitting plate at the cylinder hole bottom side end portion, which faces the drive side cam plate of either one of the adjuster nut and the adjuster bolt.
  • the thrust transmitting plate, the drive side cam plate, and a cam spring for biasing the thrust transmitting plate toward the drive side cam plate are accommodated in a generally cylindrical housing, which is mounted in the cylinder hole.
  • Engaging protrusions are formed on the outer circumference of the thrust transmitting plate. Portions of the arc face of the circumferential wall of the housing are deformed inwardly to form flat portions, and engaging apertures are formed on the flat portions.
  • the engaging apertures are configured such that the engaging protrusions are movable only in the cylinder axis direction when the engaging apertures and the engaging protrusions are engaged.
  • portions of the circumferential wall of the housing are protruded outwardly in convex shapes by presswork to form plural locking parts arranged in the circumferential direction.
  • the housing is configured so as to be mounted in the cylinder hole by latching those locking parts to the housing mounting portion formed in the cylinder hole.
  • engaging protrusions formed on the outer circumference of the thrust transmitting plate engage in engaging apertures provided in the flat portions formed on the circumferential wall of the housing. Therefore, sufficient overlap widths for fitting the engaging apertures and the engaging protrusions can be secured without the need to significantly protrude the engaging protrusions from the circumferential wall, and the reliable prevention of the rotation of the thrust transmitting plate can be achieved with a simple structure.
  • the locking parts are formed by protruding portions of the housing outwardly into convex shapes by presswork in the disk brake apparatus in accordance with one aspect of the present invention. Therefore, sufficient sizes of the locking parts both in the housing axis direction and the circumferential direction, and sufficient sizes of the protrusions in the radially outward direction can be secured. Therefore, the strength can be improved, and the housing can be firmly mounted in the cylinder hole. Since the locking parts may be formed in the same presswork process as the presswork for the housing itself, they can be easily formed.
  • Fig. 1 is a cross-sectional front view of a disk brake apparatus in accordance with one embodiment of the present invention
  • Fig. 2 is an enlarged cross-section of the main part in Fig. 1
  • Fig. 3 is a cross-section taken along the line III - III in Fig. 2
  • Fig. 4 is a cross-section taken along the line IV - IV in Fig. 2
  • Fig. 5 is an exploded perspective view of a thrust conversion mechanism, an adjust nut, and a housing of the disk brake apparatus shown in Fig. 1 .
  • a disk brake apparatus 1 in accordance with the present embodiment has a parking brake, in which both a hydraulic actuating mechanism 3 operated by a brake pedal (not shown) and a mechanical actuating mechanism 4 operated by a hand lever or a foot pedal (not shown), for the parking brake are provided in a caliper body 2.
  • the caliper body 2 is supported through a pair of slide pins (not shown) by a caliper bracket 6 which is fixed to the vehicle body at one side of a disk rotor 5 such that the caliper body 2 is movable in the disk axis direction.
  • the caliper body 2 has an action portion 2a and a reaction portion 2b, both of which are placed opposite to each other on the both sides of the disk rotor 5, and a bridge portion 2c for connecting these two portions across the disk rotor 5.
  • a pair of friction pads 7, 7 is placed opposite to each other sandwiching the disk rotor 5 between the action portion 2a and reaction portion 2b.
  • a large diameter portion 8a and a small diameter portion 8b are formed on the distal end opening side and the cylinder hole bottom side of the cylinder hole 8 respectively.
  • a sealing groove 8c and a boot groove 8d are circumferentially formed on the opening side of the large diameter portion 8a.
  • Three engaging grooves 8e extending in the cylinder axis direction are arranged at regular intervals in the circumferential direction on the small diameter portion 8b, and a circumferential groove 8f which connects the middle portions of these three engaging grooves 8e is also formed on the small diameter portion 8b.
  • the circumferential groove 8f corresponds to the housing mounting portion of the present invention.
  • a bleeder hole 8g which communicates with one of the engaging grooves 8e and the circumferential groove 8f pierces through the upper side of the action portion 2a.
  • the bleeder hole 8g is located in the upper part of the vehicle body when the caliper body 2 is mounted to the vehicle body.
  • the large diameter portion 8a accommodates a cylindrical piston 9 having a closed bottom.
  • the cylindrical piston 9 constitutes a part of the hydraulic actuating mechanism 3.
  • the small diameter portion 8b accommodates a thrust conversion mechanism 10, which constitutes a part of the mechanical actuating mechanism 4.
  • An adjuster 11 for automatically adjusting the brake gap between the disk rotor 5 and the friction pads 7 is arranged between the piston 9 and the thrust conversion mechanism 10.
  • a fixed side cam plate 12 is arranged in the cylinder hole bottom wall 8h.
  • the adjuster 11 has an adjuster bolt 13, and an adjuster nut 14.
  • a small diameter piston 13a and a clutch plate 13b are provided on the head of the adjuster bolt 13.
  • the adjuster nut 14 has a multiple thread screw portion 14a formed on the inner surface for threadably engaging with the adjuster bolt 13, and a thrust transmitting plate 14b is provided at the end portion on the cylinder hole bottom side.
  • a cylindrical housing 16 is arranged over the outer circumference of the adjuster nut 14 for accommodating a cam spring 15 and the thrust transmitting plate 14b.
  • the piston 9 is accommodated in the large diameter portion 8a of the cylinder hole 8 such that the bottom wall 9a faces the disk rotor side, and the adjuster nut 14 and the adjuster bolt 13 are located on the internal center axis of the piston 9.
  • a fitting hole 9b is provided on the inner surface of the bottom wall of the piston 9, and the small diameter piston 13a is fitted into the fitting hole 9b through a sealing material 13c.
  • the clutch plate 13b is pressed on a conical surface 9c extending radially from the opening portion of the fitting hole 9b by the action of a spring member 17.
  • the thrust conversion mechanism 10 comprises a camshaft 21, which passes through the cylinder hole bottom wall 8h and the fixed side cam plate 12 and is rotatable with respect to the cylinder hole bottom wall 8h and the fixed side cam plate 12 and movable in the cylinder axis direction, a drive side cam plate 21a provided at the cylinder hole opening side end portion of the camshaft 21, and three ramp grooves 22 formed in the drive side cam plate 21a and three ramp grooves 22 formed in the fixed side cam plate 12 and three cam bearings 23 accommodated in those ramp grooves 22.
  • Each of the ramp grooves 22 in the drive side cam plate 21a and a corresponding one of the ramp grooves 22 in the fixed side cam plate 12 is arranged at positions facing each other.
  • the drive side cam plate 21a has a cylindrical portion 21b protruding from the center of the cylinder hole opening side end portion, and the thrust transmitting plate 14b contacts the cylinder hole opening side surface through a thrust bearing 24 and a spacer 25.
  • the thrust transmitting plate 14b has an accommodation hole 14c formed at the center of the cylinder hole bottom side end portion for accommodating the cylindrical portion 21b and the screw portion distal end of the adjuster bolt 13.
  • Three engaging protrusions 14d are arranged at regular intervals in the circumferential direction on the outer circumference of the thrust transmitting plate 14b.
  • the engaging protrusions 14d are formed in such sizes that they can be accommodated inside the large diameter tubular portion 16a of the housing 16 (which is explained later) and protrude outwardly from the small diameter tubular portion 16b of the housing 16 when the adjuster nut 14 is mounted in the housing 16.
  • the fixed side cam plate 12 is formed in a disk shape, and an insertion through hole 12a, through which the camshaft 21 passes, is formed at the center of the disk.
  • Locking grooves 12c of the housing 16 are formed at regular intervals in the circumferential direction such that each of them is placed between two neighboring engaging ribs 12b, 12b.
  • the housing 16 integrally comprises a large diameter tubular portion 16a formed with an outer diameter slightly smaller than the inner diameter of the small diameter portion 8b of the cylinder hole 8 and small diameter tubular portion 16b having an inner diameter slightly larger than the outer diameter of the thrust transmitting plate 14b formed in the adjuster nut 14.
  • Three through holes 16c, which pierce through the circumferential wall of the housing 16, are arranged at regular intervals in the circumferential direction on the circumferential wall of the small diameter tubular portion 16b.
  • Three flat portions 16d extending in the cylinder axis direction are also arranged at regular intervals on the circumferential wall of the small diameter tubular portion 16b.
  • Each of the flat portions 16d is formed in a shape, which can be formed by deforming a part of the arc face of the circumferential wall inwardly into the flat shape.
  • An engaging aperture 16e extending from the cylinder hole opening side to the cylinder hole bottom side of the large diameter tubular portion 16a is formed in each of the flat portions 16d.
  • Each of the engaging protrusions 14d of the thrust transmitting plate 14b engages with a respective one of these three engaging apertures 16e such that it is movable only in the axis direction.
  • Support pieces 16f for the cam spring 15 protrude radially inwardly at the cylinder opening side end portion of the small diameter tubular portion 16b.
  • Three locking parts 16g each of which engages with a respective one of the engaging grooves 8e of the cylinder hole 8 and fits into the circumferential groove 8f, protrude from the cylinder hole bottom side of the large diameter tubular portion 16a at regular intervals in the circumferential direction.
  • Bent pieces 16h which extend from the cylinder hole bottom side and engage with the locking grooves 12c of the fixed side cam plate 12, are formed in portions of the circumferential wall between the neighboring locking parts 16g of the large diameter tubular portion 16a.
  • Gap portions are formed between the neighboring bent pieces 16h on the cylinder hole bottom side of the locking parts 16g, and these gap portions constitute continuous holes 16i for communicating between the inside and the outside of the housing 16 when the disk brake apparatus is assembled.
  • the locking parts 16g are formed by protruding the circumferential wall of the large diameter tubular portion 16a into convex shapes to the outer circumference by piercing process, which is carried out simultaneously with the presswork for the housing 16.
  • Each of the locking parts 16g is formed such that its size in the housing axis direction is larger than the plate thickness of the housing 16.
  • each of the locking parts 16g is formed with such sizes in the housing circumference direction and in the height of the protrusion that it can be inserted in a respective one of the engaging grooves 8e of the cylinder hole 8 and firmly fit into the circumferential groove 8f.
  • the thus-formed disk brake apparatus 1 in accordance with this embodiment is assembled by inserting the cam spring 15 through the opening on the cylinder hole bottom side of the housing 16 until one end of the cam spring 15 contacts the support pieces 16f, and inserting the adjuster nut 14 in the internal circumference of the cam spring 15.
  • the cylinder hole opening side end portion of the thrust transmitting plate 14b provided in the adjuster nut 14 comes into contact with the other end of the cam spring 15, and the engaging protrusions 14d of the adjuster nut 14 are engaged in the engaging apertures 16e of the housing 16 so that the thrust transmitting plate 14b is movable in the cylinder axis direction but is prevented from rotating in the circumferential direction.
  • the engaging protrusions 14d are smoothly inserted within the large diameter tubular portion 16a of the housing 16, and protrude radially outwardly from the engaging apertures 16e of the small diameter tubular portion 16b.
  • the engaging apertures 16e are formed in the flat portions 16d, larger overlap widths for fitting the engaging protrusions 14d and the engaging apertures 16e can be secured even if the engaging protrusions 14d are formed in similar sizes to those of the conventional engaging protrusions.
  • the cylindrical portion 21b of the drive side cam plate 21a which is inserted through the spacer 25 and the thrust bearing 24 in advance, is accommodated in the accommodation hole 14c of the thrust transmitting plate 14b, and the cylinder hole bottom side of the thrust transmitting plate 14b comes into contact with the cylinder hole opening end portion of the drive side cam plate 21a through the spacer 25 and the thrust bearing 24.
  • the camshaft 21 is inserted through the insertion through hole 12a such that each of the cam bearings 23 is accommodated in a respective one of the ramp grooves 22.
  • the bent pieces 16h of the housing 16 are bent so as to latch to the bottom of the fixed side cam plate 12.
  • the fixed side cam plate 12 is arranged on the cylinder hole bottom side of the housing 16, and the thrust conversion mechanism 10, the thrust transmitting plate 14b, and the cam spring 15 are assembled within the housing 16 as a single unit. Furthermore, each of the engaging ribs 12b and the corresponding one of the locking parts 16g is arranged on the same cylinder axis direction line.
  • the unit which is assembled in this manner, is aligned with the cylinder hole 8 such that the engaging ribs 12b and the locking parts 16g engage with their respective engaging grooves 8e formed in the small diameter portion 8b of the cylinder hole 8, and inserted in the cylinder hole 8 toward the cylinder hole bottom wall 8h.
  • the housing 16 is rotated in the state where the locking parts 16g are inserted so as to be aligned with the circumferential groove 8f, so that the locking parts 16g of the housing 16 engage in the circumferential groove 8f and the bent pieces 16h engage with the locking grooves 12c of the fixed side cam plate 12, and the camshaft 21 protruding from the fixed side cam plate 12 protrudes externally from the insertion through hole of the cylinder hole bottom wall 8h.
  • the engagements of the end surfaces 16k of the locking parts 16g with the cylinder hole bottom wall 8i of the circumferential groove 8f can firmly prevent the housing 16 from coming off from the cylinder hole.
  • the engagements of the engaging ribs 12b and the locking parts 16g with their respective engaging grooves 8e of the cylinder hole 8 can prevent the turning motion of the fixed side cam plate 12 and the housing 16.
  • the continuous holes 16i of the housing 16 are arranged so as to align with the engaging grooves 8e communicating with the bleeder hole 8g, so that the internal space of the housing 16 communicates with the bleeder hole 8g through the continuous holes 16i and the engaging grooves 8e.
  • the adjuster bolt 13, the ball bearings 20, the bearing plate 18, the spring member 17, and the retaining ring 19 are mounted one after another within the piston 9, and constitute a single unit.
  • the piston 9 is pushed into the cylinder hole 8 and a control lever 26 is attached to the protruding end of the camshaft 21.
  • the hydraulic actuating mechanism 3, the mechanical actuating mechanism 4, and the adjuster 11 are assembled in the caliper body 2.
  • Each of the sealing materials is furnished in appropriate manufacturing stages.
  • the housing 16 can be firmly mounted to the circumferential groove 8f of the cylinder hole 8.
  • the piston 9 is pushed toward the disk rotor by the pressure of the hydraulic fluid, which is fed into the cylinder hole 8 in advance. Then, the friction pad 7 on the action portion 2a side is pressed on one side of the disk rotor 5, and its reactive force moves the caliper body 2 in the direction toward the action portion 2a and presses the friction pad 7 located on the reaction portion 2b side on the other side of the disk rotor 5 through the reaction portion 2b. As a result, the brake action is performed in the disk brake apparatus 1.
  • the piston 9 moves only the length corresponding to the backlash of the adjuster bolt 13 and the adjuster nut 14, and therefore no adjustment action is initiated.
  • the piston 9 moves significantly toward the disk rotor 5 beyond the length corresponding to the backlash.
  • the adjuster bolt 13 rotates and moves forward, and the clutch plate 13b contacts the conical surface 9c of the piston 9.
  • the piston 9 and the adjuster bolt 13 move back the length corresponding to the backlash, and thereby the brake gaps between the friction pads 7 and disk rotor 5 are automatically adjusted within the specified range.
  • the parking brake operation by the mechanical actuating mechanism 4 can be carried out consistently stably and reliably.
  • the present invention is not limited to the structure in which the thrust transmitting plate is formed in the adjuster nut, and the adjuster nut is accommodated in the housing.
  • the thrust transmitting plate may be formed in the adjuster bolt, and the adjuster bolt may be accommodated in the housing.
  • the present invention is not limited to the structure in which the cylinder hole comprises three engaging grooves extending in the cylinder axis direction and the circumferential groove connecting middle portions of these engaging grooves, and the locking parts of the housing is latched to the circumferential groove as explained with the above-mentioned embodiment.
  • an engaging groove in the circumferential direction may be formed in the cylinder hole, and a C-shaped ring may be attached on the cylinder hole opening side of the locking parts of the housing. Then, the locking parts may be latched to the engaging groove of the cylinder hole through the C-shaped ring.

Claims (2)

  1. Appareil à frein à disque (1) comprenant :
    un piston (9) logé dans le côté d'ouverture à l'extrémité distale d'un trou cylindrique (8) ;
    un mécanisme de conversion de poussée (10) agencé sur le côté au fond du trou cylindrique (8) ; et
    un ajusteur (11) ayant un écrou ajusteur (14) et un boulon ajusteur (13),
    l'ajusteur (11) étant prévu entre le mécanisme de conversion de poussée (10) et le piston (9) ;
    dans lequel le piston (1) est poussé par le mécanisme de conversion de poussée (10) via l'ajusteur (11) ;
    le mécanisme de conversion de poussée (10) comprend :
    une plaque à came latérale fixe (12) attachée sur la paroi (8h) au fond du trou cylindrique (8) ;
    un arbre à came (21) passant à travers la paroi (8h) au fond du trou cylindrique et à travers la plaque à came latérale fixe (12), l'arbre à came (21) étant capable de rotation par rapport à la paroi au fond (8h) du trou cylindrique et la plaque à came latérale fixe (12) et mobile dans la direction de l'axe du cylindre ;
    une plaque à came latérale d'entraînement (21a) prévue au niveau de la portion terminale, du côté de l'ouverture du trou cylindrique (8), de l'arbre à came (21) ; et
    des rainures en rampe (22) formées dans la plaque à came latérale d'entraînement (21a) et la plaque à came latérale fixe (12), chacune des rainures en rampe (22) dans la plaque à came latérale d'entraînement (21a) et une rainure correspondante parmi les rainures en rampe (22) dans la plaque à came latérale fixe (12) étant agencées dans des positions en face l'une de l'autre ; et
    des paliers à cames (23) logés dans les rainures en rampe (22),
    dans lequel l'ajusteur (11) comprend une plaque de transmission de poussée (14b) au niveau de la portion terminale du côté du fond du trou cylindrique (8), qui fait face à la plaque à came latérale d'entraînement (21a), de l'un ou l'autre des éléments que sont l'écrou ajusteur (14) et le boulon ajusteur (13) ;
    la plaque de transmission de poussée (14b), la plaque à came latérale d'entraînement (21a), et un ressort de came (15) pour forcer la plaque de transmission de poussée (14b) vers la plaque à came latérale d'entraînement (21a) sont logés dans un boîtier généralement cylindrique (16), le boîtier cylindrique (16) étant monté dans le trou cylindrique (8) ;
    des projections d'engagement (14d) sont formées sur la circonférence extérieure de la plaque de transmission de poussée (14b) ;
    caractérisé en ce que
    une partie de la face en arc de la paroi circonférentielle du boîtier cylindrique (16) est déformée vers l'intérieur pour former des portions planes (16d), et des ouvertures d'engagement (16e) sont formées sur les portions planes (16d), les ouvertures d'engagement (16e) étant configurées de telle manière que les projections d'engagement (14) sont mobiles uniquement dans la direction de l'axe du cylindre quand les ouvertures d'engagement (16e) et les projections d'engagement (14d) sont engagées.
  2. Appareil à frein à disque selon la revendication 1,
    dans lequel des portions de la paroi circonférentielle du boîtier (16) se projettent vers l'extérieur sous les formes convexes par ouvrage à la presse pour former une pluralité de parties de blocage (16g) agencées dans la direction circonférentielle ; et le boîtier (16) est configuré de manière à être monté dans le trou cylindrique (8) en verrouillant ces parties de blocage (16g) à la portion de montage de boîtier formée dans le trou cylindrique (8).
EP08012968.7A 2007-07-20 2008-07-17 Appareil de frein à disque Expired - Fee Related EP2017492B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007189308A JP4782738B2 (ja) 2007-07-20 2007-07-20 ディスクブレーキ装置
JP2007189307A JP4767227B2 (ja) 2007-07-20 2007-07-20 ディスクブレーキ装置

Publications (2)

Publication Number Publication Date
EP2017492A1 EP2017492A1 (fr) 2009-01-21
EP2017492B1 true EP2017492B1 (fr) 2014-09-03

Family

ID=39929743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08012968.7A Expired - Fee Related EP2017492B1 (fr) 2007-07-20 2008-07-17 Appareil de frein à disque

Country Status (2)

Country Link
US (1) US8177038B2 (fr)
EP (1) EP2017492B1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008035366A1 (de) * 2008-07-30 2010-02-04 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Nachstellvorrichtung für eine Scheibenbremse
CN101852257B (zh) * 2009-03-30 2014-02-19 京西重工（上海）有限公司 带驻车制动的盘式制动钳
FR2963767B1 (fr) * 2010-08-16 2012-08-03 Bosch Gmbh Robert Cartouche d'actionneur mecanique de frein de vehicule automobile
FR2966540B1 (fr) * 2010-10-22 2012-11-30 Bosch Gmbh Robert Frein a disque a verrou de blocage de la cartouche de conversion par un verrou
KR101327944B1 (ko) * 2012-01-25 2013-11-13 주식회사 만도 디스크 브레이크
CN102865321B (zh) * 2012-10-16 2015-08-12 广东中博汽车零部件有限公司 一种带驻车制动机构的制动钳
KR101761593B1 (ko) * 2013-08-26 2017-07-27 주식회사 만도 디스크 브레이크
KR101853779B1 (ko) * 2014-04-28 2018-05-02 주식회사 만도 디스크 브레이크
KR102319964B1 (ko) * 2015-01-07 2021-11-01 두산공작기계 주식회사 C축 브레이크 장치
JP6889700B2 (ja) 2015-05-13 2021-06-18 エーパックス ノルウェー アクスイェ セルスカプ 天然油由来の超長鎖多価不飽和脂肪酸

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211082B (de) * 1964-02-20 1966-02-17 Teves Kg Alfred Nachstellvorrichtung fuer hydraulisch betaetigte Teilbelagscheibenbremsen von Kraftfahrzeugen
DE8900277U1 (fr) 1989-01-11 1990-05-10 Lucas Industries P.L.C., Birmingham, West Midlands, Gb
DE3914613A1 (de) * 1989-05-03 1990-11-08 Teves Gmbh Alfred Selbsttaetige nachstellvorrichtung fuer eine teilbelag-scheibenbremse
DE9407623U1 (de) * 1994-05-06 1995-09-07 Lucas Ind Plc Betätigungsvorrichtung für eine Fahrzeugbremse, insbesondere Scheibenbremse
JP2000136838A (ja) 1998-11-02 2000-05-16 Akebono Brake Ind Co Ltd ディスクブレーキ装置
FR2800825B1 (fr) * 1999-11-08 2002-01-11 Bosch Gmbh Robert Rampe a billes et cylindre de freins comportant une telle rampe
US7331432B2 (en) * 2005-08-26 2008-02-19 Nissin Kogyo Co., Ltd. Disk brake apparatus
JP4789853B2 (ja) * 2007-05-09 2011-10-12 日信工業株式会社 ディスクブレーキ装置

Also Published As

Publication number Publication date
US8177038B2 (en) 2012-05-15
US20090020378A1 (en) 2009-01-22
EP2017492A1 (fr) 2009-01-21

Similar Documents

Publication Publication Date Title
EP2017492B1 (fr) Appareil de frein à disque
EP1757836B1 (fr) Frein à disque
JP4789853B2 (ja) ディスクブレーキ装置
JP5122972B2 (ja) ディスクブレーキ用キャリパー
EP2584213B1 (fr) Frein à disque d'arrêt mécanique
JP4355311B2 (ja) ディスクブレーキ装置
JP4823984B2 (ja) ディスクブレーキ装置
JP4205073B2 (ja) ディスクブレーキ装置
JP4767227B2 (ja) ディスクブレーキ装置
JP4381336B2 (ja) ディスクブレーキ装置及びディスクブレーキ装置におけるシリンダ孔の形成方法
JP4782738B2 (ja) ディスクブレーキ装置
JP2007146957A (ja) ディスクブレーキ装置
JP2006002867A (ja) ディスクブレーキ装置
JP2006250325A (ja) ディスクブレーキ装置
JP4381335B2 (ja) ディスクブレーキ装置及びディスクブレーキ装置におけるシリンダ孔の形成方法
JP4469801B2 (ja) ディスクブレーキ装置
JP4381334B2 (ja) ディスクブレーキ装置及びディスクブレーキ装置におけるシリンダ孔の形成方法
US20220373045A1 (en) Arrangement for a shifting brake device
JP2006002785A (ja) ディスクブレーキ装置
JP4486029B2 (ja) パーキング用操作機構を備えたディスクブレーキ作動装置
JP3828978B2 (ja) ディスクブレーキ装置のアジャスタ
JP2005042753A (ja) ディスクブレーキ装置
JP6364236B2 (ja) ディスクブレーキ装置
JP2006009920A (ja) ディスクブレーキ装置
JP2004340166A (ja) パーキング機構付ディスクブレーキ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20090311

AKX Designation fees paid

Designated state(s): DE GB

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KOIKE, AKIHIKO C/O HONDA MOTOR CO., LTD.,

Inventor name: KOYAMA, KAZUO C/O NISSIN KOGYO CO., LTD.,

Inventor name: KON, AKIHITO C/O HONDA MOTOR CO., LTD.,

Inventor name: TSUCHIYA, TAKENORI C/O NISSING KOGYO CO., LTD.,

Inventor name: WATADA, AKIFUMI C/O NISSIN KOGYO CO., LTD.,

Inventor name: UCHIDA, YOSHIHISA C/O HONDA MOTOR CO., LTD.,

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NISSIN KOGYO CO., LTD.

Owner name: HONDA MOTOR CO., LTD.

INTG Intention to grant announced

Effective date: 20130712

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NISSIN KOGYO CO., LTD.

Owner name: HONDA MOTOR CO., LTD.

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NISSIN KOGYO CO., LTD.

Owner name: HONDA MOTOR CO., LTD.

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140218

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602008034169

Country of ref document: DE

Representative=s name: TER MEER STEINMEISTER & PARTNER PATENTANWAELTE, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008034169

Country of ref document: DE

Effective date: 20141016

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008034169

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20150604

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190702

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20200708

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602008034169

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210202

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210717